Homeostasis Review

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What does isotonic mean in terms of solute concentration?

Back

Isotonic refers to a solution that has the same solute concentration as another solution, resulting in no net movement of water across a selectively permeable membrane.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink or crenate.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower solute concentration compared to another solution, leading to water moving into the cell, causing it to swell.

Front

Define diffusion.

Back

Diffusion is the process by which substances move from an area of high concentration to an area of low concentration.

Front

What is the role of a selectively permeable membrane?

Back

A selectively permeable membrane allows certain substances to pass through while blocking others, helping to maintain homeostasis.

Front

What occurs during osmosis?

Back

Osmosis is the movement of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is the effect of placing an animal cell in pure water?

Back

An animal cell placed in pure water (hypotonic solution) will gain water and swell, potentially leading to lysis (bursting).

Front

Explain the term 'concentration gradient'.

Back

A concentration gradient is the difference in the concentration of a substance across a space, which drives the movement of substances during diffusion.

Front

What happens to an egg placed in a hypertonic solution?

Back

An egg placed in a hypertonic solution will lose water and shrink.